Backgound My research is on the quantum of repetitions of investigations in a tertiary care hospital setting. I have calculated the no of repetitions month wise for an entire year in two departments. I have carried out an intervention (educational lectures) in one department in an attempt to reduce the repetition. Now I want to analyse whether the intervention has had any impact on the repetitions. We presume that there is a decrease in repetition owing to the increase in knowledge with time. How do Ievaluate the same using SAS. Kindly help. Regards and thanks.
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